As Mari and Kouzuki Yuki are working at their part-time job in Akihabara to earn money for a buzzer set, Shiki and Inoue arrive in the area to train themselves with a quiz bowl game in the arcade. They're battling against a player called "Second Lieutenant Chisato" when Ashiya shows up, and the pair finds out that their opponent is someone they know quite well. Then a strange, somewhat suspicious character approaches the group...
I thought he was just 
a fountain of knowledge,
،ظننتُ أنّه شخص بمعلومات كثيرة فحسب
Ich hielt ihn nur für einen Bücherwurm,
Pensé que solo tenía conocimiento,
Pensé que solo tenía conocimiento,
C’est pas juste
qu’il en sait beaucoup,
Pensavo che fosse solo un pozzo di conoscenza,
Achei que ele só tivesse 
bastante conhecimento,
Я думал, он лишь ходячая энциклопедия,